12021002110020 has 288 divisors, whose sum is σ = 35745123197952. Its totient is φ = 3018005692416.

The previous prime is 12021002109997. The next prime is 12021002110037. The reversal of 12021002110020 is 2001120012021.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 12021002109978 and 12021002110005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2393189229 + ... + 2393194251.

It is an arithmetic number, because the mean of its divisors is an integer number (124115011104).

Almost surely, 2^{12021002110020} is an apocalyptic number.

12021002110020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12021002110020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17872561598976).

12021002110020 is an abundant number, since it is smaller than the sum of its proper divisors (23724121087932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12021002110020 is a wasteful number, since it uses less digits than its factorization.

12021002110020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5739 (or 5718 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12021002110020 its reverse (2001120012021), we get a palindrome (14022122122041).

The spelling of 12021002110020 in words is "twelve trillion, twenty-one billion, two million, one hundred ten thousand, twenty".